If you've never listened to the Gimlet Media podcast Reply All, today's the day to start.

On May 12, co-hosts Alex Goldman and PJ Vogt introduced a story their producer Sruthi Pinnamaneni has been working on for more than a year. The episode starts off sounding like a regular Reply All story, which usually focus on an aspect of technology or an internet phenomenon you haven't heard of (yet). In this episode, listeners are first introduced to a man in prison with no access to internet who runs a blog through letters he sends to his mother— but things take a turn right at the end of the show.

From the sound of it, Pinnamaneni and the Reply All team may have spent the last year looking into the story behind how 41-year-old man named Paul Modrowski was sentenced to life in prison at age 20 for the alleged murder of a young man. Modrowski maintains his innocence to this day. Listeners learn that Pinnamaneni's initial interviews with Modrowski about his blog have led to a wider investigation into his case, but we have to wait until next week for part two.

You can listen to the episode, titled "On the Inside," below. Take the 30 minutes — trust us.

As a long-time listener of Reply All, I've come to expect the unexpected from Vogt and Goldman. Every episode touches on technology and the internet and digital culture, but there's often a deeper look at the real people involved in the story. I've teared up, laughed out loud, and felt indignant on strangers' behalf. Examining humanity through the lens of the internet is typical for the series.

But true crime? This is a welcome surprise.

Modrowski's blog — which he stopped updating in January 2015 — is run by his mother. A new post, the first in over a year, appeared on May 7.

For quite some time, Gimlet Media has been working on a podcast that will highlight what has happened to Paul. Dozens of people have been interviewed and hundreds of documents have been scrutinized and/or analyzed. From what we've heard, listeners are left to draw their own conclusions.

Modrowski shown in custody during a 1993 news report.WLS TVThe obvious comparison to make here is with season one of Serial — the true crime investigation podcast produced and hosted by Sarah Koenig. Modrowski's case also echoes the likes of Steven Avery and the Netflix series on his imprisonment titled " Making a Murderer." All three prominently feature men sent to prison for murders they claim to have not committed or been involved with.

Though part one of Reply All's story gives no indication about the depth of their investigation, listeners can expect a fantastic story from the team. They've never let me down before.

Listen to the episode on their website (or download it on whatever podcast app you use on your smart phone) and stay tuned for part two.

A previous version of this article indicated that the series would be released in three parts. There is no official report on the total length of the series.

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